Elevator-guard.



No- 839,294. PATENTED DEC; 25, 1906.

- F JANsSEN & W BARLOW ELEVATOR GUARD. APILIOATION FILED JULY 2a 1906 T0on whom it may concern.-

UNITED STATES PATENT oEEIoE.

FREDERICK JA ssEN' AND WILMOT BARLOW, OF MILWAUKEE, WISCONSIN.

I ELEVATOR-GUARD. v

Specification of Letters Patent.

Patented Dec. 25, 1906.

Application filed July 23, 1906. Serial No. 327,460.

Be it known that we, FREnERIcK JANSSEN and WILMoT BARLOW, citizens ofthe United States, and residents of Milwaukee, in the county ofMilwaukee and State of Wisconsin, have invented certain new and usefulImrovements in Elevator-Guards; and we do ereby declare that thefollowing is a full,

clear, and exact description thereof.

Our invention consists in what is herein shown, described, and claimed,its object being to prevent catching a foot of a person between theplatform of an elevator and a floor of the building in which theelevator is operative, said invention being particularly applicable inconnection with freight-elevators. Figure 1 of the accompanying drawingsrepresents a side elevation of a fragment of an elevator provided withan attachment for actuating a counterweighted'swing-shield in.

suspension from a floor at an entrance to said elevator; and Fig. '2 ofsaid drawings re resents a view, partly in section, on the p aneindicated by line 2 2 in Fig. 1.

Referring by letter to the drawings, A indicates the platform of anelevator, to which a bracket B is bolted or otherwise rigidly secured.Likewise secured to the bracket to project above and below theelevator-platform is a vertically-disposed cam-rail O, the contour ofthe working portion of this rail being inclines at opposite ends and avertical stretch between the} inclines.

Fastened to the ceiling side of a floor D are bearing-brackets E for arod F, and fast on the rod is a hub G, provided with an arm H and crankI at a suitable angle to each other.

A weight J is supported in connection with the arm H, and the free endof the crank I or an antifriction-roller K, in connection there with, isnormally in the path of the cam-rail C, attached totheielevator-platform, whether the same be ascending or descending.

Fast on the rod F are hangers L, attached to a shield M, that isoverbalanced by the weighted arm H aforesaid. Spacing-sleeves N arearran ed on the rod F between the bearing-brac ets E for the same andthe hangers L, attached to the shield, the length of this shield beingequal to the width of the elevator-platform.

In practice a shield and parts above specified in connection therewithare arranged, as shown and described, in connection with the ceilingside of each floor that is passed by the elevator-platform in itsascent, or descent,

causes rocking said shield, its counterweight-arm H, and crank I beingnormally in the positions shown by full lines in Fig. 1. On the ascentor descent of the elevatorthe cam-rail attachment C of its latformcoming into 0 position to the cranl? I or antifriction-roller Etherewith of the rod F to swing the weighted arm H and shield M to theposition indicated by dotted lines in Fig. 1, and during the time thevertical stretch between the inclines of said cam-rail is opposing saidcrank or antifriction-roller, as is also indicated by dotted lines insaid Fig. 1, the aforesaid shield is vertical to revent a foot of aperson on the elevator-p atform from being caught between said platformand an adjacent floor. The cam-rail having cleared the crank I, theweighted arm H, in rigid connection with the rod F, swings back tovertical position, and thus the shield M is automatically returned toits normal position. (Shown by full lines in Fig. 1.)

We claim- 1. The combination of a vertically-disposeds'uitably-contoured cam-rail in connection with an elevator-platform, acounterweighted shield in rockin suspension from a floor, and ashield-control ing crank arranged in the path of the cam-rail.

2. The combination of a vertically-disposed suitably-contoured cam-railattachment on an elevator-platform, a rod, bearings for the rod arrangedon the ceiling side of a floor, a counterweight-arm and a crank in rigidconnection'with the rod, the crank being arranged to be actuated by thecamrail; hangers fast on said rod, a shield attached to the hangers, andspacing-sleeves on the aforesaid rod between said bearingbrackets andhangers.

3. The combination of a verticallydisposed suitably-contoured cam-railattachment on an elevator-platform, a counterweighted shield in rockmsuspension from a floor, and a shield-control ing crank carryinganlantifriction-roller in the path of the camrai In testimony that weclaim the foregoing we have hereunto set our hands, at Milwaukee, in thecounty of Milwaukee and State of Wisconsin, in the presence of twowitnesses.

. F. JANSSEN.

, W. BARLOW. Witnesses:

N. E. OLIPHANT, GEO. W. YOUNG.

